>>reporter: megan scully has also been directly affected by a mass shooting. >> i lost my brother at 101 california 20 years ago to a similar incident. he was shot by a tech, dc 9 crazed man who also shot himselfonly took down eight people that time. >> jacqueline: >>reporter: stephanie and megan say something has to be done. >> the people who took the time out of their saturday to come here in the cold and rainy weather say that it was important to do so not only to remember those who were lost but to open a dialog and say they never want to see something like this happen again. i'm jeff bush in san francisco, kron four news. >> in the east bay. police and youth groups partnered up today and held a successful gun buyback program. following the aftermath of the connecticut school massacre. hundreds of cars lined up in oakland to trade their guns for cash. kron4's jeff pierce has the details. >> one hundred and twenty one, one hundred and twenty two, one hundred and twenty three, one hundred and twenty four. >>reporter: olois simmons of youth uprising counted the cars waiting to turn